debian Add Two-Factor-Authentication to SSH on Debian Wheezy to Stretch Introduction This guide shows you, how you can add 2FA to your OpenSSH on Debian Wheezy, Jessie and Stretch using Google Authenticator. We assume that your SSH already uses Pubkey-Authentication while PasswordAuthentication is
debian Run a NTP server for the pool.ntp.org project with Debian Update 2: I've changed the 5 source servers to 3 other's that are on the same continent as our NTP Server so the offset and jitter are much better. This helped this server